./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:45:25,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:45:25,536 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 10:45:25,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:45:25,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:45:25,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:45:25,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:45:25,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:45:25,576 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:45:25,581 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:45:25,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:45:25,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:45:25,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:45:25,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:45:25,585 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:45:25,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:45:25,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:45:25,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:45:25,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:45:25,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:45:25,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:45:25,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:45:25,588 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:45:25,589 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:45:25,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:45:25,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:45:25,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:45:25,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:45:25,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:25,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:45:25,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:45:25,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:45:25,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:45:25,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:45:25,607 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:45:25,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:45:25,608 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:45:25,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:45:25,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:45:25,609 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2023-11-26 10:45:25,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:45:25,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:45:25,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:45:25,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:45:25,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:45:25,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-26 10:45:28,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:45:29,457 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:45:29,458 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-26 10:45:29,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/data/cbf44ed75/29c51d56777c496eb1724a599070d61b/FLAG49564bc74 [2023-11-26 10:45:29,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/data/cbf44ed75/29c51d56777c496eb1724a599070d61b [2023-11-26 10:45:29,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:45:29,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:45:29,535 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:29,535 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:45:29,540 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:45:29,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:29" (1/1) ... [2023-11-26 10:45:29,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32804182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:29, skipping insertion in model container [2023-11-26 10:45:29,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:45:29" (1/1) ... [2023-11-26 10:45:29,656 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:45:30,585 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2023-11-26 10:45:30,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:30,854 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:45:30,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [1076] [2023-11-26 10:45:30,924 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [1083] [2023-11-26 10:45:31,068 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2023-11-26 10:45:31,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:45:31,226 WARN L675 CHandler]: The function strcspn is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:31,226 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:45:31,234 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:45:31,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31 WrapperNode [2023-11-26 10:45:31,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:45:31,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:31,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:45:31,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:45:31,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:31,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:31,847 INFO L138 Inliner]: procedures = 133, calls = 5580, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6755 [2023-11-26 10:45:31,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:45:31,849 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:45:31,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:45:31,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:45:31,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:31,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:31,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,393 INFO L175 MemorySlicer]: Split 4881 memory accesses to 16 slices as follows [2, 4314, 497, 21, 4, 4, 3, 3, 3, 10, 3, 4, 4, 6, 2, 1]. 88 percent of accesses are in the largest equivalence class. The 4783 initializations are split as follows [2, 4254, 480, 21, 0, 4, 3, 3, 3, 0, 3, 4, 4, 0, 2, 0]. The 43 writes are split as follows [0, 26, 0, 0, 3, 0, 0, 0, 0, 10, 0, 0, 0, 4, 0, 0]. [2023-11-26 10:45:32,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,394 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:45:32,714 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:45:32,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:45:32,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:45:32,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (1/1) ... [2023-11-26 10:45:32,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:45:32,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:45:32,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:45:32,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe24464d-32dc-4a1d-9635-7c8bdf16d169/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:45:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2023-11-26 10:45:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2023-11-26 10:45:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-26 10:45:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-26 10:45:32,806 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2023-11-26 10:45:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2023-11-26 10:45:32,808 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-26 10:45:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-26 10:45:32,809 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2023-11-26 10:45:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2023-11-26 10:45:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2023-11-26 10:45:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2023-11-26 10:45:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:45:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:45:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:45:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 10:45:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 10:45:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 10:45:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 10:45:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 10:45:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-26 10:45:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-26 10:45:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-26 10:45:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-26 10:45:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-26 10:45:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-26 10:45:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-26 10:45:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-26 10:45:32,815 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2023-11-26 10:45:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2023-11-26 10:45:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-26 10:45:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-26 10:45:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:45:32,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:45:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:45:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 10:45:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 10:45:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 10:45:32,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 10:45:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 10:45:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-26 10:45:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-26 10:45:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-26 10:45:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-26 10:45:32,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-26 10:45:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-26 10:45:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-26 10:45:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-26 10:45:32,819 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-26 10:45:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-26 10:45:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-26 10:45:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-26 10:45:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-26 10:45:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-26 10:45:32,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-26 10:45:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-26 10:45:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2023-11-26 10:45:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2023-11-26 10:45:32,821 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2023-11-26 10:45:32,822 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2023-11-26 10:45:32,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:45:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2023-11-26 10:45:32,823 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2023-11-26 10:45:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-26 10:45:32,824 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-26 10:45:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:45:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:45:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:45:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:45:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 10:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 10:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 10:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 10:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 10:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-26 10:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-26 10:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-26 10:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-26 10:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-26 10:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-26 10:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-11-26 10:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-11-26 10:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2023-11-26 10:45:32,828 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2023-11-26 10:45:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 10:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 10:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 10:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 10:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 10:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-26 10:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-26 10:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-26 10:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-26 10:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-26 10:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-26 10:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-11-26 10:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-11-26 10:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:45:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2023-11-26 10:45:32,833 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2023-11-26 10:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 10:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 10:45:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 10:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 10:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 10:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 10:45:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 10:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 10:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-26 10:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-26 10:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-26 10:45:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-26 10:45:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-26 10:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-26 10:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-11-26 10:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-11-26 10:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-26 10:45:32,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-26 10:45:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-26 10:45:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-26 10:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2023-11-26 10:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-26 10:45:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-26 10:45:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-26 10:45:32,838 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-26 10:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:45:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 10:45:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 10:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 10:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 10:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 10:45:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 10:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 10:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 10:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 10:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 10:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 10:45:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 10:45:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 10:45:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-26 10:45:32,845 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-26 10:45:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:45:32,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:45:32,848 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2023-11-26 10:45:32,848 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2023-11-26 10:45:32,850 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-26 10:45:32,850 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-26 10:45:33,298 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:45:33,301 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:45:47,746 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:45:48,544 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:45:48,545 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:45:48,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:48 BoogieIcfgContainer [2023-11-26 10:45:48,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:45:48,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:45:48,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:45:48,551 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:45:48,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:45:29" (1/3) ... [2023-11-26 10:45:48,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78443327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:48, skipping insertion in model container [2023-11-26 10:45:48,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:45:31" (2/3) ... [2023-11-26 10:45:48,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78443327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:45:48, skipping insertion in model container [2023-11-26 10:45:48,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:45:48" (3/3) ... [2023-11-26 10:45:48,556 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-26 10:45:48,576 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:45:48,576 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:45:48,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:45:48,670 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c888a33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:45:48,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:45:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 336 states have (on average 1.5238095238095237) internal successors, (512), 345 states have internal predecessors, (512), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-26 10:45:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 10:45:48,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:48,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:48,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:48,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash -7721251, now seen corresponding path program 1 times [2023-11-26 10:45:48,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:48,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125556671] [2023-11-26 10:45:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 10:45:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:51,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:51,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125556671] [2023-11-26 10:45:51,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125556671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:51,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:51,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:45:51,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91169378] [2023-11-26 10:45:51,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:51,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:45:51,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:45:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:51,047 INFO L87 Difference]: Start difference. First operand has 462 states, 336 states have (on average 1.5238095238095237) internal successors, (512), 345 states have internal predecessors, (512), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:45:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:51,889 INFO L93 Difference]: Finished difference Result 1310 states and 2059 transitions. [2023-11-26 10:45:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:45:51,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-26 10:45:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:51,912 INFO L225 Difference]: With dead ends: 1310 [2023-11-26 10:45:51,912 INFO L226 Difference]: Without dead ends: 847 [2023-11-26 10:45:51,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:45:51,932 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 678 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:51,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1169 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:45:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-11-26 10:45:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 843. [2023-11-26 10:45:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 616 states have (on average 1.5194805194805194) internal successors, (936), 626 states have internal predecessors, (936), 179 states have call successors, (179), 48 states have call predecessors, (179), 47 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-11-26 10:45:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1289 transitions. [2023-11-26 10:45:52,059 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1289 transitions. Word has length 15 [2023-11-26 10:45:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:52,059 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1289 transitions. [2023-11-26 10:45:52,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:45:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1289 transitions. [2023-11-26 10:45:52,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 10:45:52,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:52,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:52,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:45:52,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:52,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1650459789, now seen corresponding path program 1 times [2023-11-26 10:45:52,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:52,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103588863] [2023-11-26 10:45:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 10:45:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:53,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:53,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:53,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103588863] [2023-11-26 10:45:53,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103588863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:53,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:53,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:45:53,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623280592] [2023-11-26 10:45:53,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:53,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:45:53,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:53,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:45:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:45:53,288 INFO L87 Difference]: Start difference. First operand 843 states and 1289 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:45:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:45:55,776 INFO L93 Difference]: Finished difference Result 2514 states and 3829 transitions. [2023-11-26 10:45:55,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:45:55,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-26 10:45:55,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:45:55,794 INFO L225 Difference]: With dead ends: 2514 [2023-11-26 10:45:55,795 INFO L226 Difference]: Without dead ends: 1672 [2023-11-26 10:45:55,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:45:55,801 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 866 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:45:55,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1084 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-26 10:45:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2023-11-26 10:45:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1497. [2023-11-26 10:45:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1079 states have (on average 1.4772937905468027) internal successors, (1594), 1095 states have internal predecessors, (1594), 328 states have call successors, (328), 90 states have call predecessors, (328), 89 states have return successors, (323), 323 states have call predecessors, (323), 323 states have call successors, (323) [2023-11-26 10:45:55,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2245 transitions. [2023-11-26 10:45:55,917 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2245 transitions. Word has length 26 [2023-11-26 10:45:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:45:55,918 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 2245 transitions. [2023-11-26 10:45:55,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:45:55,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2245 transitions. [2023-11-26 10:45:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:45:55,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:45:55,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:45:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:45:55,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:45:55,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:45:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1131928808, now seen corresponding path program 1 times [2023-11-26 10:45:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:45:55,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353962455] [2023-11-26 10:45:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:45:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:45:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:45:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:45:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:45:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:45:58,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:45:58,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353962455] [2023-11-26 10:45:58,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353962455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:45:58,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:45:58,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:45:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878781535] [2023-11-26 10:45:58,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:45:58,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:45:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:45:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:45:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:45:58,412 INFO L87 Difference]: Start difference. First operand 1497 states and 2245 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:46:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:01,922 INFO L93 Difference]: Finished difference Result 3773 states and 5855 transitions. [2023-11-26 10:46:01,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:46:01,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-11-26 10:46:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:01,942 INFO L225 Difference]: With dead ends: 3773 [2023-11-26 10:46:01,942 INFO L226 Difference]: Without dead ends: 2277 [2023-11-26 10:46:01,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:01,951 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 573 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:01,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 3706 Invalid, 2232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-26 10:46:01,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2023-11-26 10:46:02,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1519. [2023-11-26 10:46:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1097 states have (on average 1.4749316317228807) internal successors, (1618), 1113 states have internal predecessors, (1618), 332 states have call successors, (332), 90 states have call predecessors, (332), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-26 10:46:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2277 transitions. [2023-11-26 10:46:02,078 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2277 transitions. Word has length 30 [2023-11-26 10:46:02,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:02,078 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2277 transitions. [2023-11-26 10:46:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:46:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2277 transitions. [2023-11-26 10:46:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:46:02,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:02,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:02,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:46:02,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:02,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash -913074090, now seen corresponding path program 1 times [2023-11-26 10:46:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:02,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175812916] [2023-11-26 10:46:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:03,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:03,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175812916] [2023-11-26 10:46:03,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175812916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:03,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:03,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:03,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778896191] [2023-11-26 10:46:03,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:03,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:03,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:03,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:03,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:03,115 INFO L87 Difference]: Start difference. First operand 1519 states and 2277 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:46:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:04,670 INFO L93 Difference]: Finished difference Result 1697 states and 2579 transitions. [2023-11-26 10:46:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:46:04,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-26 10:46:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:04,688 INFO L225 Difference]: With dead ends: 1697 [2023-11-26 10:46:04,688 INFO L226 Difference]: Without dead ends: 1688 [2023-11-26 10:46:04,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:04,699 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 808 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:04,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 710 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-26 10:46:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-11-26 10:46:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1519. [2023-11-26 10:46:04,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1097 states have (on average 1.4740200546946216) internal successors, (1617), 1113 states have internal predecessors, (1617), 332 states have call successors, (332), 90 states have call predecessors, (332), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-26 10:46:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2276 transitions. [2023-11-26 10:46:04,832 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2276 transitions. Word has length 30 [2023-11-26 10:46:04,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:04,832 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2276 transitions. [2023-11-26 10:46:04,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:46:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2276 transitions. [2023-11-26 10:46:04,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:46:04,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:04,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:04,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:46:04,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:04,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash -855815788, now seen corresponding path program 1 times [2023-11-26 10:46:04,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:04,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432719301] [2023-11-26 10:46:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:04,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432719301] [2023-11-26 10:46:05,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432719301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:05,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:05,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:05,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600754209] [2023-11-26 10:46:05,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:05,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:05,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:05,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:05,936 INFO L87 Difference]: Start difference. First operand 1519 states and 2276 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:46:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:07,374 INFO L93 Difference]: Finished difference Result 1681 states and 2559 transitions. [2023-11-26 10:46:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:07,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-11-26 10:46:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:07,392 INFO L225 Difference]: With dead ends: 1681 [2023-11-26 10:46:07,393 INFO L226 Difference]: Without dead ends: 1678 [2023-11-26 10:46:07,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:07,395 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 792 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:07,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 683 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:46:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2023-11-26 10:46:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1518. [2023-11-26 10:46:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1097 states have (on average 1.4731084776663628) internal successors, (1616), 1112 states have internal predecessors, (1616), 331 states have call successors, (331), 90 states have call predecessors, (331), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-26 10:46:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2274 transitions. [2023-11-26 10:46:07,529 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2274 transitions. Word has length 30 [2023-11-26 10:46:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:07,529 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2274 transitions. [2023-11-26 10:46:07,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:46:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2274 transitions. [2023-11-26 10:46:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-26 10:46:07,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:07,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:07,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:46:07,534 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:07,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:07,534 INFO L85 PathProgramCache]: Analyzing trace with hash -760709631, now seen corresponding path program 1 times [2023-11-26 10:46:07,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:07,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617515108] [2023-11-26 10:46:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:07,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:08,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:08,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617515108] [2023-11-26 10:46:08,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617515108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:08,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:08,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:08,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412045569] [2023-11-26 10:46:08,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:08,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:08,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:08,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:08,544 INFO L87 Difference]: Start difference. First operand 1518 states and 2274 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:46:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:46:10,221 INFO L93 Difference]: Finished difference Result 1680 states and 2557 transitions. [2023-11-26 10:46:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:10,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2023-11-26 10:46:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:46:10,236 INFO L225 Difference]: With dead ends: 1680 [2023-11-26 10:46:10,237 INFO L226 Difference]: Without dead ends: 1677 [2023-11-26 10:46:10,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:10,239 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 789 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:46:10,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 680 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 10:46:10,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2023-11-26 10:46:10,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1517. [2023-11-26 10:46:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1097 states have (on average 1.472196900638104) internal successors, (1615), 1111 states have internal predecessors, (1615), 330 states have call successors, (330), 90 states have call predecessors, (330), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-26 10:46:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2272 transitions. [2023-11-26 10:46:10,371 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2272 transitions. Word has length 31 [2023-11-26 10:46:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:46:10,373 INFO L495 AbstractCegarLoop]: Abstraction has 1517 states and 2272 transitions. [2023-11-26 10:46:10,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:46:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2272 transitions. [2023-11-26 10:46:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 10:46:10,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:46:10,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:10,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:46:10,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:46:10,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2107381193, now seen corresponding path program 1 times [2023-11-26 10:46:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:10,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521716382] [2023-11-26 10:46:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:46:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 10:46:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:11,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521716382] [2023-11-26 10:46:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521716382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:11,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:11,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:46:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332742235] [2023-11-26 10:46:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:11,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:11,317 INFO L87 Difference]: Start difference. First operand 1517 states and 2272 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)